LT4 6.2L Supercharged Engine Specifications

The LT4 is a 376-cubic-inch (6.2-liter) Gen-V Small-Block V8 with a longitudinal configuration. Chevrolet lists a 10.0:1 compression ratio, 4.065-inch bore, and 3.622-inch stroke.

Specification	LT4 6.2L Supercharged V8
Engine Type	Gen-V Small-Block V8
Displacement	6.2L / 376 cu. in.
Aspiration	Supercharged
Supercharger	1.7L Eaton R1740 TVS
Horsepower	650 HP @ 6,400 RPM
Torque	650 lb-ft @ 3,600 RPM
Compression Ratio	10.0:1
Bore	4.065 in. / 103.25 mm
Stroke	3.622 in. / 92 mm
Fuel System	Direct Injection
Maximum Recommended RPM	6,600 RPM
Cylinder Heads	A356T6 Rotocast Aluminum
Block	Cast Aluminum
Crankshaft	Forged Steel
Connecting Rods	Forged Powdered-Metal Steel
Pistons	Forged Aluminum
Camshaft	Hydraulic Roller
Valve Configuration	Overhead Valve
Valves per Cylinder	2
Recommended Fuel	Premium Gasoline

GM states that the LT4’s 1.7L Eaton R1740 TVS supercharger can spin at up to 20,000 RPM and generate more than 9 psi of boost.

650 Horsepower and 650 lb-ft of Torque

One of the biggest reasons buyers look for an LT4 engine for sale is its factory performance.

The LT4 produces:

• 650 horsepower at 6,400 RPM
• 650 lb-ft of torque at 3,600 RPM
• 6,600 RPM maximum recommended engine speed

This combination provides strong low- and mid-range torque while maintaining the high-RPM capability expected from a modern performance V8.

For builders who want a powerful factory-based engine, the LT4 provides a strong starting point for street performance, track builds, pro-touring cars, restomods, and custom engine swaps.

What Makes the LT4 6.2L Different?

The LT4 was engineered specifically to withstand the increased cylinder pressures associated with forced induction.

Unlike a naturally aspirated LT1, the LT4 incorporates several upgraded components designed around supercharged performance. Chevrolet lists a forged-steel crankshaft, forged aluminum pistons, forged powdered-metal connecting rods, Rotocast aluminum cylinder heads, and a supercharger integrated into the intake system.

The result is a factory-engineered combination that delivers substantial power while retaining the compact architecture and packaging advantages of the Gen-V Small-Block family.

LT4 Engine Applications

The LT4 has been used in several high-performance Chevrolet and GM applications.

Notable factory applications include:

Chevrolet Corvette Z06

The LT4 became famous as the supercharged engine powering the C7 Corvette Z06. Chevrolet Performance describes the LT4 as the engine behind the Corvette Z06, with its 650-horsepower factory rating.

Chevrolet Camaro ZL1

The LT4 was also used in the Chevrolet Camaro ZL1, where its 6.2-liter supercharged architecture provided the performance expected from Chevrolet’s high-performance Camaro. GM’s current LT4 specifications identify the Camaro ZL1 as an application.

Cadillac CTS-V

The LT4 was also used in the high-performance Cadillac CTS-V, giving the luxury sedan a factory supercharged V8 powerplant.

LT4 Crate Engine for Sale

A new LT4 crate engine can be an attractive option for builders who want a factory-based 650-horsepower supercharged V8 rather than rebuilding a used engine.

Chevrolet Performance currently lists the LT4 crate engine with a 650-hp rating, 650 lb-ft of torque, forged-steel crankshaft, forged aluminum pistons, and Gen-V architecture. Chevrolet Performance also lists an LT4 E-ROD version designed as a street-legal package, subject to applicable requirements.

When shopping for an LT4 crate engine, buyers should confirm exactly what is included with the engine. Depending on the supplier and configuration, an engine package may not include every accessory, controller, wiring component, fuel-system component, transmission, or other installation hardware.

Wet-Sump vs. Dry-Sump LT4 Engines

When buying an LT4 6.2L supercharged engine, it is important to understand the oiling-system configuration.

Depending on the engine and application, LT4 packages can be supplied in different configurations, including wet-sump and dry-sump versions.

A dry-sump system can be particularly useful for performance applications where oil control under hard cornering, acceleration, and braking is important. However, the correct configuration depends on the vehicle, chassis, intended use, and installation requirements.

Before ordering, buyers should confirm:

• Wet-sump or dry-sump configuration
• Engine part number
• Supercharger assembly
• Accessory drive
• Throttle body
• Fuel system components
• Engine control requirements
• Wiring requirements
• ECU/controller compatibility
• Included sensors
• Included accessories

LT4 Engine Swap Considerations

The LT4 is a popular choice for engine swaps because it combines modern technology with substantial factory power.

However, installing an LT4 into a different vehicle is more than simply mounting the engine.

An LT4 swap may require consideration of:

Engine Mounts:
Custom or application-specific mounts may be required depending on the chassis.

Transmission:
The transmission must be compatible with the LT4’s torque output and electronic control system.

Engine Management:
The correct ECU, controller, wiring harness, sensors, and calibration are important for proper operation.

Fuel System:
The LT4 uses direct injection, so the fuel system needs to be designed around the engine’s requirements.

Cooling:
A high-performance radiator and appropriate cooling system may be necessary depending on the vehicle and intended use.

Exhaust:
Headers, manifolds, catalytic converters, and exhaust routing must be compatible with the engine and chassis.

Accessory Drive:
Clearance and accessory-drive configuration should be confirmed before installation.

Why Buy an LT4 6.2L Supercharged Engine?

There are several reasons the LT4 remains highly desirable among performance enthusiasts.

1. Factory Supercharged Performance

The LT4 delivers 650 horsepower and 650 lb-ft of torque in factory specification.

2. Modern Gen-V Architecture

The LT4 uses Chevrolet’s modern Gen-V Small-Block architecture, combining aluminum construction, direct injection, variable-valvetrain technology, and forced induction.

3. Forged Internal Components

The engine features a forged-steel crankshaft and forged aluminum pistons, along with forged powdered-metal connecting rods.

4. Proven Factory Applications

The LT4 has powered high-performance vehicles including the Corvette Z06, Camaro ZL1, and Cadillac CTS-V.

5. Excellent Engine-Swap Potential

For suitable vehicles and properly engineered installations, the LT4 can provide an impressive foundation for modern V8 swaps, restomods, and high-performance builds.

LT4 vs. LT1

The LT4 and LT1 share the Gen-V Small-Block family, but the LT4 was developed for substantially higher output through forced induction.

Feature	LT4	LT1
Displacement	6.2L	6.2L
Aspiration	Supercharged	Naturally Aspirated
Compression Ratio	10.0:1	11.5:1
Horsepower	650 HP	Up to 460 HP depending on application
Torque	650 lb-ft	Up to 465 lb-ft depending on application
Fuel System	Direct Injection	Direct Injection
Crankshaft	Forged Steel	Application dependent
Supercharger	1.7L Eaton R1740 TVS	No

Chevrolet’s published specifications show the LT4 at 650 hp and 650 lb-ft, compared with the LT1’s lower naturally aspirated output.

How Much Does an LT4 Engine Cost?

The price of an LT4 6.2L supercharged engine for sale in the USA can vary significantly depending on whether the engine is new, used, rebuilt, complete, dressed, or sold as part of a larger drivetrain package.

Pricing can also change according to:

• Engine mileage
• Engine condition
• Wet-sump or dry-sump configuration
• Complete vs. long-block configuration
• Supercharger included or not
• ECU and wiring included or not
• Accessory drive included or not
• Warranty
• Availability
• Shipping location

For this reason, buyers should request a current quotation based on the exact LT4 configuration they need rather than relying on a generic advertised price.

What Should You Check Before Buying an LT4?

If you are purchasing a used or performance LT4 engine, ask the seller for as much documentation as possible.

Important information includes:

• Engine serial number
• Donor vehicle
• Model year
• Mileage
• Compression-test results
• Leak-down results where available
• Oil-pressure information
• Engine condition
• Supercharger condition
• Service history
• Photos of the complete engine
• Included accessories
• ECU/controller availability
• Warranty terms

A reputable engine supplier should be able to clearly explain what is included with the engine and what additional components may be required for installation.

Buy an LT4 6.2L Supercharged Engine in the USA

If you are looking for an LT4 6.2L supercharged engine for sale in the USA, choosing the correct engine configuration is essential.

At Forged & Stocked Engines, we can help buyers identify the right LT4 configuration for their project, whether you are building a muscle car, Corvette project, restomod, performance vehicle, or custom engine-swap application.

Before purchasing, provide your vehicle information, intended application, desired engine configuration, and any components you already have. This allows the correct engine package and supporting components to be identified.

Contact Forged & Stocked Engines for current LT4 6.2L supercharged engine availability, specifications, configuration, shipping options, and pricing.

Frequently Asked Questions About the LT4 6.2L

How much horsepower does an LT4 make?

The factory LT4 is rated at 650 horsepower at 6,400 RPM and 650 lb-ft of torque at 3,600 RPM.

Is the LT4 supercharged?

Yes. The LT4 uses a 1.7L Eaton R1740 TVS supercharger. GM states that the supercharger can spin at up to 20,000 RPM and generate more than 9 psi of boost.

What vehicles use the LT4?

The LT4 has been used in performance applications including the Chevrolet Corvette Z06, Chevrolet Camaro ZL1, and Cadillac CTS-V.

Is the LT4 good for engine swaps?

The LT4 can be an excellent foundation for an engine swap when the chassis, transmission, fuel system, electronics, cooling system, exhaust, and engine-management requirements are properly addressed.

What fuel does the LT4 require?

GM specifies premium gasoline, with its current LT4 engine specification listing 93-octane premium gasoline.

Is the LT4 better than the LT1?

For maximum factory power, the LT4 is the more powerful engine because it uses a factory supercharger and is rated at 650 horsepower. The LT1 is naturally aspirated and has a higher compression ratio. The best choice depends on the vehicle and intended application.

Final Thoughts

The LT4 6.2L supercharged V8 is one of Chevrolet’s most recognizable modern performance engines. With 650 horsepower, 650 lb-ft of torque, a 1.7L Eaton supercharger, direct injection, forged internal components, and Gen-V architecture, it offers an impressive combination of factory power and modern technology.

For customers searching for an LT4 crate engine, LT4 supercharged engine, LT4 engine for sale USA, 6.2L supercharged Chevy engine, or LT4 engine swap, the most important step is matching the engine configuration to the vehicle and project requirements.

Looking for an LT4 6.2L supercharged engine for sale in the USA? Contact Forged & Stocked Engines for current availability, specifications, pricing, and shipping information.